Stuegis whitlock



(No Model.)

s. WHITLOGK. PAPER CUTTING MACHINE.

. PatentedSeptf, 1885.

` Stutge OfA4 n 4 lwwwm UNIT/ED PATENT OFFICE Vsrnneis wHrTLoom-,ord nIRMINeHAM, CONNECTICUT.

PA'PErR-cu'T-rlne MACHINE. y

SPECIFICATION forming part of Letters Patent No. 326,002, dated September 8, 1885.

Application filed June 15, ISSl (No model.)

y of Birmingham, in the county of New Haven and State of Connecticut, have invented new Improvements in Paper-Cutting Machines; and Ido hereby declare the following, when vtaken in connection with accompanyingd'ra'wings, and vthe letters of reference marked thereon, to be a full, clear, and exact, description of the same, and which saidA drawings constitute part of this specification, and represent, in

Figure 1, a front View of the right-hand end portion of the machine,showing the cutter-bar, table, driving-shaft, and clutching mechanism with my improvement applied; Fig. 2, a horizontal section through the frame over the Cutter-bar, looking downward, and showing a horizontal sectionithrough the tubular recess in thelever in which the follower is arranged; Fig. 3, the same, as Fig. '2,l showing the lever as turned to produce the clutching action be` tween the pulley and shaft,and before the cutter-bar commences its movement.

This invention relates to an improvement in that class of paper-cutting machines in which the cutter consists of a blade adapted to work upand down, or from and toward the table on which the material to be cut is placed, the said cutter hung to the frame, so, that in its descent a longitudinal movement is,1

imparted to it, whereby a drawing cutis produced-a well-known style of machine. These machines are constructed to be vdriven by power or by hand, and in either case it is dcsirable that the cutter shall stop always at its np position, and at theV termination of every stroke, so that the material beneath the cutter may be readj usted between each stroke for a new out.

The object of my invention is the construction of a stopimotion which will positively arrest the cutter when it has arrived at its up position on the return of the cutter, and whether or not the driving pulley or wheel shall cease or continue its movement; and the invention consists in the construction of the stop-motion in connection with the clutching device of the machine, as more fully hereinafter described, and particularly' recited in the claims.

The general construction of the machine is toorwell known fto require full illustration or detailed'description,'andI show only a sufficientportion of the machine to properly illustrate the invention and its inode of opera;

tion.

A represents the table on which thematerial is placed to be cut; B, a portion` of the frame; C, the cutter-bar carrying the cutter 6o D; E, one of the links by which the cutter-bar is hung to the frame above, and sothat as the cutter-bar descends the links will cause the bar and cutter to move longitudinally across the table, and thereby impart a drawing cut.

F is the driving-shaft to which power is applied to impart the down-and-up movement to the cutterbar. On the shaft is a loose pnlley,G,to which the power is applied. This pulley also carries the {1y-wheel H, which may be 7o used as a hand or crank wheel should ocean sion require.

On the shaft upon the inside of the pulley is a clutch, I, actuated by a lever, J, hung to the clutch and projectnginwardl y therefrom,l 7 5 a common and well-known clutch, not necessary to be particularly described fu rther than to say that the lever turned from the shaft will cause the clutch to grasp theshaft,so that theshaft will turn with the pulley, or if the lever J be turned 8o inward the pulley will be left free to revolve, While the shaft willremain stationary. On the shaft and near the lever J is a conical-shaped sleeve, K, adapted to slide longitudinally toward and from the lever J, and so that forced under the lever J, as indicated in broke'n lines,4 Fig. 1, it will throw that lever outward to en gage the shaft, or, moved in the opposite direction, will permit the lever to turn inward and release the shaft. The sleeve K is moved back and forth toward and from the lever J by a hand-lever, L, hung upon a fulcrum, M, and so that the hand ofthe operator applied thereto will enable him to engage power with the driving-shaft, or release it therefrom, as occasion may require. i

The inner arm of the lever L is tnrnedtoward the machine at substantially right angles and in a horizontal plane, and upon' this turned-in portion of the arm a spring-followena, is arranged, adapted to move in a line substantially parallel with the line of the lever L, but at one side of the said line through the lever L, and so that as the lever is turned to throw the sleeveK to engage the clutch the follower, turning upon the fulcru 1n M of the lever, will not only move longitudinally with the sleeve, but will also be forced inward, as indicated in broken lines, Fig. 2.

The cutter-bar C-is constructed witha downwardly-projecting arm, N, outside the frame, the said arm extending dow nin rear ofthe rightangular portion of the lever M, and so that when the cutter is in its up position, as shown, the movement of the lever to throw the sleeve to engage the clutch will cause the follower a to swing around, strike the front ofthe arm N, and, force the bolt inward, as indicated in Fig. 3.'

In this condition, the power being applied, the cutter-bar will descend, and at the same time will move tothe right until the arm N shall pass from thefollower a, as indicated in broken lines, Fig. 2. Then the follower, being free, will be thrown outward and stand in the path of the arm N, and as indicated in broken lines,Fig. 2, and so that when the cutter-bar returns, taking with it the arm N, the arm N will strike the follower, andtherebyimpartthe movement ofthe cutter-bar to the lever, so as to withdraw the sleeve K from its engagement with the clutch and thereby release the driving-shaft from the power, and this action occurs as the cuttenbar reaches its extreme up position. Y rIhen when the work is arranged for another cut the lever L is turned as before, the cut made, and on the return of the cutter the arm N again returns the lever L and disengages the power, and so on.

As represented, the follower a. is arranged in a tubular portion of the lever, and with a spring surrounding it adapted to impart a forward movement to thc follower, yet yield under the pressure applied to the follower; but any suitable spring arrangement may be applied which will so yield as the lever is turned to engage the clutch, and react to bring the projection from the lever into the path of the returning arm.

The portion of the lever carrying the follower is best made separate from the lever itself, and so as to be adjusted thereon by means of a bolt and slot, as indicated in the drawings; but it may be made. as a fixed or inadjustable part of the lever.

I claim l. In a cutting-machine in which the cut4 ter-bar in its movement toward and from the table also receives a longitudinal movement, the combination therewith of a driving-pulley loose on the driving-shaft, a clutch between said pulley and driving-shaft, a sleeve upon said shaft adapted to engage or disengage said clutch, a hand-lever arranged to impart 1ongitudinal movement to said sleeve, a cutterbar constructed with a downwardly-projecting arm, N, in rear of said shaft and lever, and a spring-follower on said lever arranged to move into the path of said arm under the swinging movement of said lever, substantially as described.

2. In a cutting-machine in which the cutter-bar in its movement toward and from the table also receives a longitudinal movement, the combination therewith of a driving-pulley loose on the driving-shaft, a clutch between said pulley and drivingshaft, a sleeve, K, upon said shaft, adapted to engage or dis engage said clutch between the shaft and pulley, a hand-lever, L, arranged to swing in a horizontal plane, and in engagement with said sleeve K, whereby under the swinging movement of the lever a corresponding longitudinal movement will be imparted to said sleeve K, the inner arm of said lever turned to one side at substantially right angles, and in snbstantially the same horizontal plane as the body of the lever, a spring-follower arranged upon the inner end of the said turned portion of the arm, and adapted to move on said arm in a line at one side of lout parallel with the line through the fulcrum of the lever, the cutter-bar constructed with an arm, N, extending downward in rear of said follower, the said follower adapted to be moved into the path of the said arm under the movement of the lever, substantially as described, and whereby, in the movement of the said sleeve Vto produce the said clutching action between the said pulley and the shaft, the said springfollower will be brought into contact with the adj aeent surface of the said arm and thereby forced forward, and so as to escape from the said arm as it moves under the action of the cutter-bar, and so escaping the follower will spring into the path of the arm on its return, substantially as described.

S'IURGIS VIAIITLOGK.

lVitnesses:

JOHN E. EARLE, LrLLmN D. KnLsnY.

IOO 

